CipherLab 8200 Reference Manual page 25

Backlight Configuration Key
This key is used to turn ON/OFF the backlight of the LCD and keypad. Also, while pressing [ ],
the navigation keys can be used to adjust the luminosity and contrast of the screen backlight.
Key Description
[ ] + [Right] Press these keys at the same time to increase the contrast.
[ ] + [Left] Press these keys at the same time to decrease the contrast.
[ ] + [Up] Press these keys at the same time to increase the luminosity.
[ ] + [Down] Press these keys at the same time to decrease the luminosity.
Power Key
In order to prevent an accidental press of the POWER key, you need to hold down this key for
approximately 1.5 seconds to turn ON/OFF the mobile computer.
Note: (1) Functionality of keys is application-dependent. The system will send the
associated key code to the application program, and it is up to the application
program to interpret the key code.
(2) When a status icon appears on the screen, it indicates a certain mode is
activated and it is not necessary to hold down the modifier key.
Chapter 1 Using 8200 Mobile Computer
15